Microsoft Windows implementations of the TCP/IP protocol fail to properly validate IGMP packets, leading to a denial-of-service condition.
TCP and IGMP
The Transmission Control Protocol (TCP) is defined in RFC 793 as a means to provide reliable host-to-host transmission between hosts in a packet-switched computer network. The Internet Group Management Protocol version 3 (IGMPv3) is defined in RFC 3376 as a protocol to help manage multicast connections over the internet.
By sending a specially crafted IGMPv3 packet to a vulnerable system, an unauthenticated, remote attacker could cause that system to stop responding.
Apply an Update
Microsoft has addressed this issue in Microsoft Security Bulletin MS06-007.
Please see Microsoft Security Bulletin MS06-007 for a list of workarounds to mitigate this vulnerability.
This vulnerability was reported in Microsoft Security Bulletin MS06-007. Microsoft credits Douglas Nascimento of Datacom with providing information regarding this issue.
This document was written by Jeff Gennari.
|Date First Published:||2006-02-14|
|Date Last Updated:||2006-02-19 13:38 UTC|